Shore for construction work



Patented Apr. 22,

untrue WILLIAM M. GOLDSMITH, OF CINCINNATI, OHIO;

SHORE FOR 'CQNSTRUCTION WORK.

Application filed October 8, 1920. Serial No. 415,659.-

To all whom it may concern.

Be it known that I, WILLIAM M. GOLD- SMITH, a citizen oi the United States of America, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Shores for Construction Work, of which the following is a specification.

An object of my invention is to provide a shore to be used to support molds for plastic work, that can be readily expanded and contracted.

Another object is a shore that is free from projections that will obstruct workmen.

Another object is to provide a shore that will not become accidentally released.

Another object is to provide a device of the .ype referred to that will maintain an adjusted position.

Another object is to provide a shore that may operate regardless of its position.

These and other objects are attained by the means described herein and disclosed in the accompanying drawing in. which Fig. 1 is an elevation showing a device embodying my invention mounted in an operative position.

2 is an enlarged line 22 of Fig. 1.

Fig. 3 is an enlarged line 33 of Fig. 2.

Fig. 4 is a plan view of a collar forming a detail of my invention.

Fig. 5 is a side elevation of a device shown in Fig. 4.

Fig. 6 is a of 3.

.tty invention comprises a housing A that is mounted between the two supports B and B, and thru which an adjustable standard C passes. The device is adapted to permit ready movement of the adjustable standard in given direction and to resist movement of such standard in the opposite direction. The housing A. is preferably of square or rectangular cross section and has extending therefrom a series of perforated lugs athru which bolts may be passed in order to mount the housing upon the supports B and B. The supports B and B are preferably mounted upon the housing A diametrically opposite to one another. A central bore a extends thru the housing A parallel with the supports B and B. The adjustable standard C is adapted to extend thru the central bore a and is of a diameter substansectional view on sectional view on plan view of thebottom plate tially. equal to that of the bore. A series top a of the housing. Upon the bottom of base 0. of the housing is mounted a perforated plate at that is adapted to be mounted upon such base by means of bolts or screws that pass thru the countersunk eperforations o and engage in the housing. Mounted upon the plate a is a perforated collar at having a series of notches a in its upper surface, which surface engages the under surface of the plate a Thru the perforations a in the collar a and thru the perforations a in the plate a extend a series of plungers a. The plungers have-heads a at their upper ends which extend into the pockets a formed in the corners of the upper or top section of the housing and communicating wlth the central bore. These pockets taper gradually upward from the mid-section of the housing to the upper end of the housing. Adjustable nuts o mounted upon the lower ends of the plungers, limit the extent to which said plungers and the heads there-on extend into the pockets at. n spring a is mounted on the plunger between the head thereon and the plate a A ball is disposed within each pocket, such balls being retained in the pockets by means of the plungers. The balls are suffioiently large to engage the walls of the pockets, the adjustable standard C and the head a onthe plunger. Altho I have shown a series of tapered pockets, thebore itself may be tapered and the balls held in position in the tapered bore by any desired means, such as a ring supported by the plungers. The shape of the bore and the adjustable standard an also be modified if desired.

The operation of my device is as foliows:-

The adjustable standard C extends thru the bore of the casing A, the plate a and the collar (4. The ballsin the pockets at arenormallyheld in engagement with the walls of the pockets and the standard C by means of the plungers (4 actuated by the springs a. The balls prevent the housing A together with the supports B and B upon which the housing is fixedly mounted, from moving downward upon the standard because the balls would be forced up into the pockets. This is normally impossible because the pockets taper upward, and therefore any such relative movement of the its such relative movement.

standard C, housing A and supports B and B is impossible. The plungers a together with the springs thereon serve to hold the balls in such position that they will resist W hen it is desired to raise the housing A and supports B and B upon the standard C, the balls are pushed downward by the relatively opposite movement of the standard and housing tending to move the balls into a larger section of the pockets and moving the balls against the yielding resistance of the spring operated plungers. .When the desired adjustment has been made of the standard C the balls again assume positions bearing upon the casing and the standard C. When it is desired to release the standard C from its adjusted position, a series of nails, or pointed tools of any kind or type are forced between the plate a and the collar a The notches a make this a very simple operation. When the collar is raised from the platen the plungers a are moved away from the rotors or balls at, releasing the rotors or balls and thereby making it possible to lower the housing and supports upon the standard C. lVhen the nails or the tools are removed, the plungers again assume their normal position and hold the balls upon the standard C and the casing A. Althol have shown the adjustable standard C being round in cross section it is readily apparent that this member may be made of any form, and appropriate structural changes made in the casing A to accommodate such other form of adjustable standard. Either the standard C or the supports l3 and B may be used as a base, the device operating equally efficient r'egardless of whether the device is used as shown in Fig. l or if used in an inverted position from that shown. Any of the races or any other suitable expedient commonly used to retain balls within a restricted area can be employed to prevent the balls escaping from the housing if the standard is to be frequently removed from the bore in the housing. Any other means or type of rotors that will function as do the balls, plungers, the plate and collar upon the housing may be resorted to without deviating from the spirit andscope of my disclosures.

What I claim is 1. In a shore the combination of a housing adapted to be mounted upon supports and having a tapering bore, a perforated plate mounted upon the housing, a perforated collar mounted upon the plate, the collar and plate having perforations in alignment with. the bore of the housing, a standard extending thru the bore and perforations of the housing, plate and collar and movable therethru, a series of rotors contained within the housing and interposed between the standard and the housing, plungers extending from the collar into the bore and normally retaining the rotors in joint contact upon the housing and the standard, and yieldable means adapted to maintain the plungers in their normal positions.

2. In a shore the combination of a housing adapted to be mounted upon supports and having a tapering bore, a perforated plate mounted fixedly upon the housing, a perforated collar mounted upon the plate, the collar and the plate having perforations in alignment with the bore of the housing, a standard extending thru the bore and the perforations in the housing, plate and collar and movable therethru, a series of rotors contained within the housing and interposed between the standard and the housing, plungers extending adjustably thru perforations in the collar and the plate and normally engaging the balls, and springs mounted upon the plungers and abutting the plate.

8. In a shore the combination of a housing adapted to be mounted upon supports and having a tapered bore, a perforated plate mounted on the housing, a perforated collar mounted on the plate, the plate and collar having perforations in alignment with the bore in the housing, the collar having a series of notches upon its one surface, such surface normally engaging the plate. a standard extending thru the bore in the housing and thru the perforations in the plate and collar, and movable therethru, a series of rotors encased within the housing and interposed between the standard and the housing, and plungers mounted on the collar. extending thru the plate and abutting the rotors.

In testimony whereof, I have hereunto subscribed my name this 7th day of October, 1920.

WILLIAM M. GOLDSMITH. 

